JP2000356236A - Cooling device for reciprocating piston type damper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cooling device for preventing a lowering of performance caused by working heat in a reciprocating piston type damper. SOLUTION: Compressed air produced by the stroke of a damper cylinder 2 and an outer cylinder tube 1 is spouted from a nozzle 5 to cool a damper cylinder.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reciprocating piston type damper cooling device.

[0002]

2. Description of the Related Art A conventional dambar dissipates heat generated during operation by natural heat radiation. If this is operated at high speed, the efficiency tends to decrease due to high heat. For this reason, the material of the cylinder is made to have a high heat radiation effect, or fins are attached to the outer periphery to improve the natural heat radiation effect.
Some dampers for automobiles and the like have an outer tube attached for the purpose of dust prevention, but their cooling ability is not recognized due to the large clearance between the dambar cylinders.

[0003]

As the piston moves within the cylinder of the bar, the fluid therein is compressed and flows through the orifice in the bar to a lower pressure. At this time, the kinetic energy changes to heat energy and the temperature of the dambar is increased. This impairs the airtightness of the cylinder and piston, changes the viscosity and density of the internal fluid, and causes a reduction in performance. Further, this deteriorates oil and the like, accelerates wear of pistons and cylinders in the dam bar, and shortens the life of the dam bar itself.

[0004]

Means for Solving the Problems 1) The cylinder portion of the reciprocating dambar is a piston, and the outer tube portion is a cylinder. In this way, an air ejection pump is made, and air is ejected along the outer periphery of the dambar cylinder to cool it. It should be noted that a conventional damper with an outer tube is distinguished from the present invention in that an ejection port having an area of 1/10 or less of the piston area of the air ejection pump is set. 2) Attach the suction reed valve to the outer tube. 3) The area of the outer cylinder tube and the ejection pump piston section is enlarged, and a larger compression pump is created to increase the ejection capacity. 4) At the end of the conventional outer tube, a spout ring having an appropriate clearance with a dambar cylinder is newly provided to have a spouting effect. The above can be easily experienced by a person blowing his breath on his palm.

[0005]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.

FIG. 1

FIG. 11 illustrates an embodiment of the present invention.

[Brief description of the drawings]

FIG. 1 is a sectional view of an embodiment (1). Outer tube (1)
Shows the time of compression sliding between the damper cylinder (2) and the outer cylinder tube (1), and the air compressed in the outer tube (1) is blown out from the outlet (5) along the outer peripheral portion of the dambar cylinder (2);
Cool down. The suction reed valve (3) is for sucking outside air when the dambar is extended.

FIG. 2 is a sectional view of an embodiment (2).

FIG. 3 is a perspective view of a spout ring for retrofit. By attaching a retrofitting spout ring (6) to the lower end of a conventional dustproof outer tube, the clearance between the outer tube (1) and the dambar cylinder (2) is reduced,

An object equivalent to FIG. 1 can be achieved.

FIG. 4 is a plan view of the suction top reed valve (9) when attached to the upper surface of the outer tube. this is

FIG. 5 is shown in FIG.

FIG. 1 is also effective.

FIG. 5 is a sectional view of an embodiment (3).

FIG. 5 shows a spout ring (8) attached to the lower part of a telescoping outer tube (7) made of telescoping rubber, for example.
It can be installed at an arbitrary position in the dambar cylinder (2), and air can be blown out to an appropriate position from the blowout port (5). still,

FIG. 5 shows a state in which the dambar is extended, and suction is performed from a suction top reed valve (9).

FIG. 6 is a plan view of a spout ring.

FIG. 7

FIG. 1 is a cross-sectional view of an embodiment (4) aimed at expanding the capability of FIG.

In FIG. 7, the capacity of the outer tube (1) is increased and the diameter of the spout ring (10) is enlarged to further increase the spouting ability. The spout ring (10) is fixed to the dambar cylinder (2), and slides up and down at the point of contact with the inner wall of the outer tube (1) so that there is no air leakage. Also, a safety valve (12) is provided to prevent the pressure inside the outer tube from becoming too high.

FIG. 8

FIG. 5 is a cross-sectional view of an embodiment (5) aiming to expand the capability of FIG.

FIG. 8 is to increase the capacity of the telescopic outer tube (7),
The spout ring (11) is attached to the lower part, and it is attached to an arbitrary position of the dambar cylinder (2). The spout ring (8), (10), (11) may be integrated with the dambar cylinder (2).

FIG. 9 is a plan view of a spout ring (11).

FIG. 10 is a plan view of a spout ring (13).

In FIG. 10, the cooling effect is improved by preventing the step (5) from forming a step with the outer peripheral surface of the dambar cylinder.

FIG. 11 is a side view of the spiral spout ring (14). The jet outlet (5) is inclined to blow out the jet air in a spiral shape, thereby cooling for a longer time. The ejection direction is arbitrary.

According to the present invention, the performance of a reciprocating piston type damper can be sufficiently maintained even under severe conditions,
It can come out to fully exploit the performance of the machine with the built-in dambar. Also, a higher performance dambar can be produced which could not be realized due to a heat problem. These effects can be achieved with only minor improvements to the existing dambar.

[Brief description of the drawings]

FIG. 1 is a sectional view of an embodiment (1).

FIG. 2 is a sectional view of an embodiment (2);

FIG. 3 is a perspective view thereof.

FIG. 4 is a plan view of a suction valve.

FIG. 5 is a sectional view of an embodiment (3).

FIG. 6 is a plan view of the device according to the embodiment (3).

FIG. 7 is a sectional view of an embodiment (4).

FIG. 8 is a sectional view of an embodiment (5).

FIG. 9 is a plan view of an apparatus according to embodiments (4) and (5).

FIG. 10 is a plan view of an apparatus according to embodiments (3), (4), and (5).

FIG. 11 is a sketch of an apparatus according to the whole embodiment.

[Explanation of symbols]

1. Outer tube 2. Dunbar cylinder
3. 3. Reed valve for suction 4. Dunbar piston Spout 6.
6. Retrofit spout ring Telescopic outer tube 8. Spout ring 9.
Top suction reed valve for suction 10. Spout ring 11. Spout ring 1
2. Safety valve 13. Spout ring 14. Spiral spout ring

Claims (1)

[Claims] By the compression pump function which consists of the cylinder (2) of the dambar and the outer tube (1), the cylinder (2) of the dambar is used as the piston, and the outer tube (1) is used as the cylinder, between the outer periphery of the dambar and the outer tube. A cooling device characterized in that compressed air generated at the time of a stroke is ejected from an ejection port (5) of the above-mentioned (1) to wipe off heated air on an outer peripheral portion of the dambar.